Machine for mixing gas and air.



No. 704,763. Patented 'July 15, 1902.

' J. SEYMDUB.

MAGHINE FOR MXNG GAS AND AIB.

' (Afpucuion med nen. 9. 1901.) (Nn Model.) y 4 Sheath-Sheet I.

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lill] J0@ Je N'o. 704,763. Patented Iuly'I5', i902.

I II. SEYMUIIR.

MACHINE FUII MIXING GAS AIID AIB; I

I [Application Bled Dec. 9, 1901.) (No Model.)` I I 4 Sheds-Sheet 2;

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No. 704,763. Patented my l5, |902..

.1. SEYMUUR.

MACHINE FDR MIXING GAS AND AIB.

(Appucatidn med me. 9, 1901.) (mi man.) 4 sheets-sheet s,

l lll l'i Illll 1 1l 1 W lul Il llel ulnllu uluxll v J. SEYMDUR.

MACHINE FOR MIXING AS AND AHL (Application filed Dec. 9, 1901.) (lid Model.) 4 Sheis-Sh-et 4.

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UNITED STAT-Es PATENT OFFICE.

JOHN SEYMOUR, OF TORONTO, CANADA.

MACHINE FOR MIXING GAS A'ND AIR.

SPECIFICATION forming part of Letters Patent-Nd 704,763, dated July 15, 1902. iippiiaiimA mea December 9. 190i. serai no. 85,288. er@ mais and useful Improvements in Machines for4 Mixing Air with Gas, of which the following is a specification.

This invention relates to that class of machines which is arranged to measure air and gas in the desired quantities and thoroughly mix the same in the required proportions, and particularly to the construction and operation of the mechanisms by which this re-v sult is obtainedall of which will more fullyI hereinafter appear.

The principal object of this invention is to provide a simple, economical, and elicient machine with means for measuring air and gas and mixing the same in desired quantities and proportions. i

A further object is to provide a machine with two movable parts-one'for measuring air and the other for measuring gas, and to mix the said gases in ,an economical manner.

Further objects will appear from an exanii`.

nation of the drawingsand the following description and claims.

The invention consists principally in the combination of an outer casing provided with a liquid -sealing chamber and two movable parts arranged therein-one for measuring' air and one for measuring gas, and arranged by their cooperation to assist in thoroughly mixing the same.

The invention consists, further, in the coinbination of a receptacle providing a liquidsealing chamber and two concentric rotatable cylinders-one for measuring air and the other for measuring gas, and arranged by their cooperation to assist in thoroughly mixing the gas.

The invention consists, further, in the combination of an exterior receptacle providing a mixture-exhaust and liquid-sealing chainber and two interior concentric cylindrical receptacles arranged one Within the other and provided'with helical measuring-chambers-*one for measuring air and the other for measuring gas, and arranged by their cooperation to thoroughly mix such gases.

The invention consists, further, in the com! hination of an exterior receptacle providing a mixture-exhaust and liquid-sealing chamber, two concentric cylindrical receptacles provided wit-h peripheral helical air and gas measuring chambers, respectively, geared together so as to rotate simultaneously, means for feeding air to the chambers of the exterior cylinder, and means for feeding gas to the chambers of the interior cylinder to assist in thoroughly mixing such gases during the cooperation of the parts.

. y The invention consists, further, in the combination of an exterior casing providinga mixture-exhaust and liquid-sealin g chamber, an outer cylindrical receptacle provided with a series of substantially helical measuringchambers for air and 'communicating at one end with the exhaust-chamber, aconcentric inner cylinder provided with a series of helical measuring-'chambers open atcone end to the exhaust-chamber, gear mechanism connecting both cylinders together, means for feeding gas tothe inner cylinder to rotate the same and by which itis measured, and means for feeding air` to the other cylinder, the partsbeing arranged to cooperate and mix the two gases together.

The invention consists, further and finally, in the features, combinations, and details of construction hereinafter described and claimed.-

In the accompanying drawings, Figure l is an elevation, partly in section, taken through the longitudinal center of the machine; Fig. 2, a vertical sectional elevation taken on line 2 of Fig. 3 looking in the direction of the -arrow; Fig. 3, a cross-sectional elevation taken on line 3 of Fig. 2 ylooking in the direction of the arrow, and Eig. 4 a similar view taken o n line 4- of Fig. 2 looking in the direction of the arrow.

In'constructiiig a machine in accordance with these improvementsl provide an exterior lcasing a of the desired size, shape, and strength to hold and sustain the" operative and other parts in position for use. This part, as shown particularly in Figs. 3 'and 4, Yis substantially cylindrical in contour when viewed in cross-sectional or end elevations and may be provided with a base or other supporting portion to sustain it in operative `positionand condition. This casing forms ICO what I prefer to term an exterior receptacle, providing an interior ehamberb, which, as above suggested, acts as a liquid-sealing chamber in the lower portion and as a mixture-exhaust chamber in the upper portionthat is, a chamber in which the mixture of the gas and air is held for a time before being drawn oit through the exhaust-pipe c for consumption and use.

To measure the quantity of air desired for use, I provide an outer rotatable cylinder portion d, which is provided at one end with an air-supply chamber e and at the same time has a liquid seal formed by the liquid in the lower portion thereof, which liquid extends through each and every chamber of the entire apparatus. This cylinder is provided with an inner cylindrical wall f, between which and the outer cylindrical wall is arranged a series of helical air-measuring chambers g, formed by the blades or helical partitions h and arranged 4in series around the periphery thereof, as shown partieularlyin Figs. l and One end of each of these helical air-measuring chambers is open to the airsupply and liquid-sealing chamber e, and the other end of the cylinder* being opened it is naturally connected with or has communication with the mixture-exhaust chamber b.

To measure gas in the desired quantities, a second or inner concentric rotatable cylinder QI is provided, havinga series of helical chambers formed by the blades j and which at one end-and the upper portion thereof-forms a gas-supply chamber and at the lower portion a liquid-sealing chamber, which seal forces the gas forward during the rotation of the parts. The other end is opened to the interior of the outer air-measuring cylinder, so that the gas as it passes out therethrough flows in the direction indicated by the legends and back and out through the open end of such air-cylinder and into the mixture-exhaust chamber, where it is mixed with the air as such air is forcedinto the exhaustchamberA The supply end of the air-chamber e is provided with an air-supply pipe 7c, which has its opening above the liquid seal, as shown in Fig. 2, and thesupply end of the gas-chamber is provided with a gas-supply pipe Z, opening into such chamber above the liquid seal. As the gas is fed in under the desired pressure to the gas-supply chamber the inner rotatable cylinder, being pivoted, as shown in Fig. 2 of the drawings, in the walls of the air and gas supply pipes, is free to rotate by the action of the gas impinging against the blades thereof. This action is controlled entirely by the pressure and velocity of the gas which is driven through such chamber and measured as it is being forced therethrough, the liquid seal acting to prevent its return and not permitting it to leave such chamber until its outlet is raised above the liquid seal.

It is highly desirable that some means be arranged to rotate the outer cylinder during the rotation of the parts, and in order to accomplish this result coincident with the revolu tions of the inner cylinder such inner cylinder is provided with a spur-gear m and the outer cylinder with an internal annular gear n, while an intermediate spur-pinion p, rotatably mounted on the walls of the exterior receptacle, meshes with both of these gears and transmits power and motion from one to the other, thus insuring the desired rotation of the outer cylinder simultaneously with that of the inner cylinder and at the desired rate or speed. The exterior receptacle is provided with a water box q, communicating with the inner chambers by means of thek perforations r in I the exterior casing a and through the openings in the ends of both rotatable cylinders. This water-box is also provided with a watersupply pipe s and an overflow-pipe t, insuring the desired supply of water and the maintaining of the desired level of the liquid seal in all of the chambers. i

In operation the gas is furnished through the gas-supply pipe into the gas-supply chamber of the interior receptacle, impinging against the helical blades to rotate the same in such a manner as to feed the gas through the helical chambers thereof at the desired rates of speed and to measure the desired quantity. At the same time the rot-ation of the exterior cylinder takes place, which, with its helical blades, cuts the desired quantity of air, measures it in the helical chambers, and forces it into the exhaust-chamber, where it is brought into intimate contact and forms a mixture with the gas and from which it may be wit-hdrawn through the exhaust-pipe c. The rate of rotation of these parts and of the operation of the machine will be entirely dependent on the gas-supply. It the supply of gas be turned off entirely, the machine will stop operating. If but a small quantity of gas be supplied, the machine will operate very slowly, while it a large 'quantity of gas be supplied the machine will operate very fast, being regulated, of course, by the pressure in the exhaust-chamber, which in turn is controlled by the amount which is drawn otli for consumption or demand, all of which will be understood by those skilled in the art.

I claiml. In a machine of the class described, the combination of an outer casing, and two movable parts arranged therein and forming two chambers one within the otherone for measuriug air and one for measuring gas, arranged by their cooperation to assist in thoroughly mixing the same, substantially as described.

2. In a machine of the class described, the combination of an outer easing provided with a liquid-sealing chamber, and two movable parts arranged therein and forming two chambers one within the other--one for measuring air and one for measuring gas, arranged by their cooperation to assist in thoroughly mixing the same, means for admitting gas under pressure into the chamber of one of IOO IIO

such movable parts to measure such gas and cause such part to rotate, and means for connecting such two movable parts, whereby when one is rotated the other is operated, substantially as described.

3. In a machine of the class described, the combination of a receptacle providing a liquid-sealing chamber, and two concentric rotatable cylinders-one for measuring air and the other for measuring gas and arranged by their cooperation toassist in thoroughly mixing the gas, substantially as described.

4. In a machine of the class described,the combination of an exterior receptacle providing a mixture-exhaust and liquid-sealing chamber, and two interior concentric cylindrical receptacles arranged one within the other and provided with helical measuringchambers-one for measuring. air and the other for measuring gas and arranged by their cooperation to thoroughly mix such gases, substantially as described.

5. In a machine of the class described, the combination of an exterior receptacle providing a mixture-exhaust and liquid-sealing chamber, two concentric cylindrical receptacles provided with peripheral helical measuring-chambers geared together so as to rotate simultaneously to thoroughly mix air and gas during the coperation of the parts, means for feeding air to the chambers of the exterior cylinder, and means for feeding gas to the chambers of the interior cylinder, substantially as described.

6. In a machine ofthe class described, the combination of an exterior casing providing a mixture-exhaust and liquid-sealing chamber,'an outer cylindrical receptacle provided.

with a series of-substantially helical measuring-chambers for air and communicating at one end with the exhaust-chamber, a concentric inner cylinder provided with a series of helical measuring-chambers open at one end to the exhaust-chamber, gear mechanism connecting both cylinders ltogether, means for feeding gas to the inner cylinder to rotate the same and by which it is measured, and means for feeding air to theyother or outer cylinder, the `parts being arranged to copcrate and mix the two gases together, substantially as described.

7. In a machine of the class described, the combination of an exterior casing provided with a mixture-exhaust and liquid-sealing chamber, an outer cylinder having one closed' helical air-measuring chambers opening intok the exhaust-chamber,l an inner concentric cylinder provided with an outer cylindrical wall and closed at one end to form a gas-supply chamber and provided with aplurality of helical lblades forming a series of helical measuring chambers,a iixed `pipe entering the air and liquid chamber above the liquid seal-of the outer cylinder upon which one end ot both cylinders is rotatably mounted, a fixed pipe entering the gas-supply chamber of the inner cylinder upon whichthe other end of the inner cylinder is loosely and rotatably mounted, and an exhaust-pipe for the exhaust-chamber of the outer receptacle, substantially as described.

8. In a machine of the class described, the

vcombination of an exterior casing provided with a mixture-exhaust and 'liquid-sealing chamber, an outer cylinder having one closed end and two concentric walls between the ends of which is arranged an air and liquidsealing chamber and between the concentric walls of which is arranged a series of helical air-measuring chambers opening into vthe exhaust-chamber, an inner concentric cylinder provided with an outer cylindrical wall and closed at one end to form a gas-supply chamber and provided-with a pluralityof helical blades forming a series of helical measuring chambers, a iixed pipe entering the air and liquid chamber above the liquid sealer" the outer cylinder upon which one end of both cylinders is rotatably mounted, a'xed pipe entering the gas-supply chamber of the inner cylinder upon which the other end'ofthe inner cylinder is loosely and rotatably mounted, an exhaust-pipe for the exhaust-chamber of the outer receptacle, `a liquid-supply box secured to Ithe main receptacle and having .communication with the liquid-sealing'portion thereof, and supply and overliow'pipes Von such box, substantially as described.

JOHN SEYMOUR.

Witnesses:

THOMAS F. SHERIDAN, ANNIE C. COURTENAY.

IOO 

